Smoking pipe



United States Patent Office 3,367,344 Patented Feb. 6, 1968 3,367,344 SMOKING PIPE Stephen Peter Chernoclr, 1553 Boston Post Road, Milford, Conn. 06460 Filed .lune 28, 1965, Ser. No. 467,401 Claims. (Cl. 1311-207) ABSTRACT 0F THE DHSCLGSURE A smoking pipe having a tubular stem provided with an axial passage therethrough, a bowl secured at the forward end of said stern including a peripheral wall defining a wel-l space and having a radial passage extended between said well space and the exterior of said bowl, and a removable bit at the rearward end of said stem, having a smoke passage therethrough, said axial passage of Said stem adapted upon removal of said bit to have an elongated filter element insert-ed forwardly therein and removed rearwardly therefrom, said stem being connected to said bowl by a connector member having an axial passage therethrough and including a shank portion secured within the forward end portion of said stem and a stud portion projecting forwardly from said stem and secured within said radial passage of said bowl, a cap mem-ber in which the forward end of said filter element may be grippingly engaged in sealed relation being slideable longitudinally in said passage of said stem and having a tubular forwardly extending shank portion adapted in a forward position of said cap member to be supported in slideable sealed relation in said passage of said connector member, said cap member having a finger engageable actuating means extended to the exterior of said stem through a longitudinal slot therein, and by means of which, upon removal of said bit, said cap member may be manually moved from said forward position in sealed relation in said passage of said connector member to a rearward position whereby said filter element is propelled rearwardly to a projected position relatively to the rearward end of said stem.

The present invention relates to a smoking pipe, particularly of the type wherein an elongated cylindrical lter element is received in the stern for the purpose of filtering the smoke passing through the stem from the -bowl to the mouthpiece to remove tars and other harmful ingredients and, in the case of treated or medicated filters, to infuse the smoke with medication or other ingredients to improve the taste or impart therapeutic properties thereto. Pipes of this type have been objectionable heretofore in that it has been difficult to maintain an effective seal in the pipe stem to confine the smoke to passage through the filter, and it has furthermore been difiicult to eject or remove the filter for the purpose of replacement.

It is an object of the present invention to provide an improved sealing arrangement combined with a filter ejecting means whereby an effective seal is maintained through the smoke passage of the stem. It is further proposed to provide ejecting means for the filter adapted to have sealed engagement with one end thereof, and which is longitudinally movable in the stem through the manual actuation of external actuating means to eject the filter in one direction of movement and to draw the filter into the stem in the other direction of movement.

Other objects and advantages will become apparent from a consideration of the following detailed description taken in connection with the accompanying drawings wherein a satisfactory embodiment of the invention is shown. However, it will be understood that the invention is not limited to the details disclosed but includes all such variations and modifications as fall within the spirit of the invention and the scope of the appended claims.

In the drawing:

FlG. l is a side elevation of a smoking pipe according to the invention;

FIG. 2 is a side elevation showing the mouthpiece removed and the filter ejecting means actuated to eject the filter;

FIG. 3 is a longitudinal sectional view of a smoking pipe as seen in FIG. 1;

FIG. 4 is a fragmentary enlarged view partially in top plan and partially in horizontal section taken along the line 4 4 of FIG. 3;

FIG. 5 is an enlarged transverse vertical sectional view taken along the line 5 5 of FIG. 4;

FIG. 6 is an enlarved detail view partially in elevation and partially in section of a connector mem-ber employed in the combination pipe structure;

FIG. 7 is an enlarged detail plan view of the filter engaging cap member of the filter ejecting means;

FIG. 8 is an enlarged detail View partially in elevation and partially in longitudinal section of the filter element.

Referring to the drawings, the smoking pipe according to the exemplary embodiment of the invention illustrated therein comprises a bowl consisting of a bowl base 10 preferably formed of suitable metal, for example aluminum, and a bowl body 11 preferably formed of briar root, the base being of generally cup-shaped cylindrical form and provided at its upper open end with internal screw threads 12 for receiving the externally threaded reduced diameter lower shank portion 13 of the bowl body. An annular shoulder 14 is disposed inwardly of the internal threads 12 in surrounding relation to a cylindrical pocket or well 15, and the bowl body is provided with a tobacco receiving opening or cavity 16 having a plurality of smoke passages 17 in its lower end in communication with the well 15.

The stem 18 is also preferably of metal, for example extruded aluminum, and is provided internally with a cylindrical passage 19 and externally at opposite sides with longitudinal channels 20-20 of substantially rectangular cross section internally. As shown clearly in FIG. 5 the vertically disposed walls of these channels are formed by the outer surface of the stem and the horizontally disposed side walls are preferably formed' by pairs of vertically spaced parallel horizontal flanges 21- 21 and 21-21 integral with and projecting from opposite sides of the generally cylindrical outer surface of the stem, thus providing a stem shape which may be conveniently and economically produced by extrusion. The flanges also serve to provide heat-radiating fins to dissipate heat from the stem.

The passage 19 of the stem is internally threaded at its forward bowl attaching end portion as at 22 and has a connector member 23 received therein comprising an in-v termediate `annular shoulder 24, an externally threaded shank portion 25 :at one side of the shoulder and a cylindrical stud portion 26 at the other side. The externally threaded shank por-tion 25 is screwed into the internally threaded forward end 22 of the stem with the annular shoulder 24 seated in an annular groove 27 in the forward end of the stern to limit the screw threaded engagement of the shank portion 25 therein, so that in the assembled relation as clearly seen in FIG. 4 the forward side of the shoulder is fiush with the forward flat end surface of the stern with the stud portion 26 projecting therefrom. The connector member 23 .is provided with a cylindrical passage 28 having ia beveled chamfer 29 at its rear end and provided in forwardly spaced relation to the charnfer with an internal annular groove 30 in which a resilient O-ring 31 of nylon or other suitable material is received, the size of the O-ring being such that in its relaxed state it projects slightly within the passage 28. At its forward end the stud portion 26 is provided with a transverse slot 32 for the purpose of facilitating the threaded engagement of the connector member in the threaded end of the stem by means of a screw driver, and further to predispose the stud portion to easy outward daring in the assembly of the stern with the bowl base, as will presently more fully appear.

Externally the bowl base l() is of stepped form with an intermediate annular shoulder 33 delineating a lower reduced diameter portion, this shoulder preferably being aligned with the upper surfaces of the upper fianges 21 of the stern in the assembled relation, as will presently more fully appear. For the purpose of rigid assembly of the stem and bowl base the latter is provided with a radial cylindrical passage 34 opening at its forward end to the well and opening at its rearward end to a planar stemengaging surface 35 formed upon the lower reduced diameter portion of the bowl base extending laterally at opposite sides of said passage and of a width substantially corresponding to the width of the stem. Intermediate the upper edge of the planar surface the shoulder 33 is concavely recessed at 36 -to conform to and receive the forward end portion of the upper cylindrical surface of the stem. The diameter of the passage 34 is such as to receive the stud portion 26 with a snug sliding lit, while at the same time the forward fiat end surface of the stem f is engaged at laterally opposite sides of the forwardly projecting stud portion 26 of the connector member 23 with the planar stem-engaging surface 35 with the end portion of its upper cylindrical surface received in the recess 36 and the end portions of the upper surfaces of the upper flanges 21 in engagement with the shoulder 33 at each side of the recess 36. The stud portion 26 of the connector member 23 is of a length to project into the well 15 sufficiently to permit its being flared outwardly as at 37, -as clearly shown in FIG. 4, by insertion of a suitable swaging or flaring tool therein, and whereby the stem is rigidly secured to the bowl base. By virtue of the engagement of the end surfaces of the stem with the planar surface 35 and the recessed shoulder 33 of the bowl base, the assembled parts are firmly buttressed against loosening through twisting strains imparted between the bowl base and the stem as well as against relative axial rotation of the stem.

Slideably engaged within the passage 19 of the stem is a filter sealing and ejecting cap member 38. This comprises a cylindrical cap portion 39 slideable within the passage 19, tand a reduced diameter cylindrical shank portion 40 slideably engageable within the passage 28 of the connector member 23 and of a length to engage within the resilent O-ring 31 in its normal position as seen in FIG. 4. A beveled chamfer 41 is provided at the forward end of the shank portion for guiding cooperation with the beveled chamfer 29 of the connector member as the cap member is engaged therewith. A passage 42 is provided through the shank portion 40 and opens to a pocket 43 in the cap portion 39, this pocket being rearwardly divergent with its surrounding wall tapered to a substantially feathered edge, so as to permit easy wedging engagement without obstruction of the filter element, as will presently more fully appear.

The cap member is adapted to be longitudinally moved from its normal sealed position as seen in FIGS. 1, 3 and 4 to a filter ejecting position as seen in FIG. 2, and for this purpose is provided with actuating means in the form of a headed actuating pin 44 rigidly secured by a press fit in a pocket v45 in the side of the cap portion 39 and extending outwardly through a longitudinal slot 46 in the stem extending laterally through a portion of the wall of the stem defining the passage 19 and the Ibase wall of the channel at one side of the stem. The pin 44 is connected to an elongated slide member 47 slideably fitted within the channel 20 and of a length to completely cover the slot 46 in the normal position as seen in tFlG. l. The slide mem- Cil ber is provided at its outer side with a finger engaging boss 48 provided with a pocket 4-9 having a hole 50 in its base, the pin 44 being slideably engaged through the hole 50 with its headed end disposed in the pocket and with a helical spring L51 interposed beneath the `headed end, and bearing upon the `base of the pocket 49. rlhus the slide is resiliently pressed against the base of the channel 20 to eliminate any looseness between the sliding parts to frictionally retain such parts in their relatively moved positions. The slot 46 is of a length to -limit the forward and rearward movement of the cap member respectively to the forward position as seen in FIG. 4, where the shank portion of the cap member is in sealed engagement with the O-ring, and to the rearward position as seen in FIG. 2, where the used filter is ejected and may be withdrawn from the stem, or a new filter fitted into place.

The filter element 52 is of well-known form and comprises fibrous material, as for example treated paper rolled into cylindrical form with an air-impervious coating 53 upon its outer cylindrical surface. Air passages extend longitudinally between the ends of the filter through which smoke may be drawn in such relation to the fibrous material as to have tars and other injurious substances filtered therefrom and entrapped within the filter. As seen in FIG. 3 the filter is adapted to be disposed in the stem with one end wedgingly engaged in sealed relation with the rearwardly divergent tapered pocket 43 of the cap member 38, and its other end similarly engaged within a forwardly divergent tapered pocket 54 provided in and opening to the forward end of the reduced shank 55 of the mouthpiece 55 having a longitudinal passage 57 therethrough, the shank being fitted with a press lit in the rearward end of the passage 19 of the stem.

What is claimed is:

1. A smoking pipe comprising:

a bowl part including a peripheral wall defining a Well space, there being a radial passage through said wall opening at its forward end to said well space and at its rearward end to the exterior of said bowl;

a tubular stem having a wall providing a cylindrical passage therethrough internally threaded at its forward end portion, said stern wall having a longitudinal slot having its forward and rearward terminal ends respectively spaced rearwardly and 'forwardly from the forward and rearward ends of said stem;

a connector member having an axial passage therethrough of smaller diameter than said axial passage of said stem, said connector member including a rearward externally threaded shank portion screwed into said internally threaded forward end portion of said axial passage of said stem, and a forward stud portion projecting forwardly from said stem for securing engagement in said radial passage of said bowl;

an externally cylindrical cap member slideably engaged in said cylindrical axial passage of said stem rearwardly of said forward internally threaded portion thereof, said cap member having a rearwardly` divergent pocket opening to its rearward end and a forwardly extending tubular shank portion of smaller diameter than said axial passage of said stern;

a bit having a smoke passage therethrough and includinga forward shank portion for removable engagement in the said axial passage of said rearward end portion of said stern;

an elongated filter member engaged in said passage of said stem for wedging sealed engagement at its for ward end in said pocket of said cap member; and

a finger engageable actuating means connected to said cap member and extended through said longitudinal slot to the exterior of said stem whereby, upon removal of said bit from said stem, said cap member is manually movable in the cylindrical passage of said stem from a 'forward position where its said shank portion is slideably supported in sealed relation in said passage of said connector member to a rearward position whereby said filter element is propelled by said cap member to a projected position relatively to the rearward end of said stem.

2. A smoking pipe as defined in claim 1, wherein said connector member is provided at its rearward end with a 4beveled chamfer for engagement of said shank portion of said cap member into said axial passage of said connector member.

3. A smoking pipe as defined in claim 1, wherein said stem is provided with a longitudinal channel of substantially rectangular cross section having side walls deiined by a pair of vertically spaced parallel horizontal anges integral with and projected from said stem, and a vertically extending base wall dened by the external surface of said stem extending between said flanges, wherein said longitudinal slot of said stem is disposed along the base of said channel intermediate its side walls and wherein a slide member connected to said actuating means is slideably engaged in said channel.

`4. A smoking pipe as defined in claim 3, wherein spring means is interposed between said actuating means and said slide member to resiliently press said slide member against the base wall of said channel.

5. A smoking pipe as defined in claim 1 wherein said shank portion of said bit has a forwardly divergent pocket opening to its forward end for sealed wedging engagement of the rearward end of said filter element.

References Cited UNITED STATES PATENTS 193,696 7/1877 Dummer 131-225 X 451,313 4/1891 Weinmann 131-214 X 738,503 9/1903 Waters.

767,801 8/1904 Dis-ch 131-225 X 1,257,905 2/1918 Mack 131-182 1,319,622 10/1919 Volkman et al. 131--182 1,809,529 6/1931 Pottibone 131-207 1,861,910 6/1932 Dunhill 131--225 2,228,951 1/1941 Franklin 131--182 2,581,169 1/1952 Bugg 131-214 X 2,722,937 1/1955 Meohas 131--182 X 2,785,684 3/1957 Lowenthal 131--207 X 2,883,991 4/1959 Copell 131-207 3,021,849 2/1962 Alles 131--182 FOREIGN PATENTS 417,673 11/1910 France.

536,573 5/ 1941 Great Britain.

SAMUEL KOREN, Primary Examiner.

JOSEPH S. REICH, Examiner. 

